I just returned my deck and had another one sent to me on account of a flaky LED. This keyboard lights up just fine. But i'm noticing that some of the keys feel stickier than others. The following keys:

behave differently. i don't get the same satisfying "thunk" when i press these keys, and they are considerably more difficult to press down than the rest of the keys on the keyboard, and I don't remember my previous deck legend having this issue. Am I nuts? are they like this? Do they just break in over time?